These are two cultured white pearls that have not been treated in any way, (no dye, no enhancement, no bleach, etc.). The top pearl measures approximately 6mm and the bottom pearl is approximately 8.5mm. The metal is 14K yellow gold plated over 925 sterling silver. I include a small gold foil box in case the buyer is purchasing a gift, and I do ship SAME DAY :). Thank you SO much for looking through my items!